Re: [LAU] Simple loop playing from command line

Ken Restivo wrote:
> I'm trying to figure out a way to play a simple loop from the command line. It doesn't need to be synchronized with anything (our drummer will be talking over it).
>
> I found this archive:
>
> http://comments.gmane.org/gmane.comp.audio.ecasound.general/3843
>
> But there seems to be no "audioloop" in ecasound (I have 2.4.6.1-2 ).
>
> The man page I have on my system mentions "-tl", so I tried that, and it zombified jack (not good).
>
> Here is what I tried;
>
> $ ecasound -f:f32_le,2,48000 -t:3600 -a:1 -i:audioloop,johnloop48.wav -a:all -o jack_auto
> does nothing, just tells me three tims that it is using realtime-scheduling:
> - [ Engine init - Driver start ]
> (eca-engine) Using realtime-scheduling (SCHED_FIFO:50).
> (eca-engine) Using realtime-scheduling (SCHED_FIFO:50).
> (eca-engine) Using realtime-scheduling (SCHED_FIFO:50).
>
> Hmm. Goole says try "notransport". So I do.
>
> $ ecasound -f:f32_le,2,48000 -G:jack,ecasound,notransport -tl -a:1 -i:audioloop,johnloop48.wav -a:all -o jack_auto
> does nothing, just goes:
> - [ Engine init - Driver start ]
> (eca-engine) Using realtime-scheduling (SCHED_FIFO:50).
> and then hangs, but at least that tells me only once that it's realtime-scheduling
>
> OK, how about doing what the docs say?
>
> $ ecasound -f:f32_le,2,48000 -G:jack,ecasound,notransport -tl -a:1 -i:johnloop48.wav -a:all -o jack_auto
> plays the loop once, then zombifies
> (eca-engine) Using realtime-scheduling (SCHED_FIFO:50).
> zombified - calling shutdown handler
> (eca-engine) WARNING: Engine has raised an error! Possible causes: connection
> ... lost to system services, unable to adapt to changes in operating environment, etc.
> - [ Controller/Batch processing finished (-3) ] --------------------------------
> ecasound: Warning! Errors detected during processing.
> (eca-control-objects) Disconnecting chainsetup: "command-line-setup".
>
> At least I got sound out of it though.
>
> Are there any other command-line tools I could use to loop a wav file, possibly simpler and less weird than ecasound?

mplayer -loop 0 filename.wav

0 says to loop forever. Use some other number to loop how many times you
want, then have it stop.

The mplayer I have here (stock Debian Lenny) supports using JACK.

-- 
David
gnome@email-addr-hidden
authenticity, honesty, community
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